Auxiliary spring for use on automobiles.



R. P. & W. H. CLARK.

AUXILIARY SPRING FOR USE ON AUTOMOBILES.

' APPLIOATION FILED JULY 22, 1913.

1510949305. Patented Apr. 21, 1914.

UNITED STATES PATENT OFFICE.

ROBERT P. CLARK AND WILLIAM H. CLARK, OF FRESNO, CALIFORNIA.

AUXILIARY srnrivs i onnsn on AUTOMOBILES.

Specification of Letters Eatent. Patented Apr. 21, 1914. Application filed July 22,1912, Serial No. 780,576.

4 To all whom it may concern Be it known that we, ROBERT P. CLARK and WILLIAM H. CLARK, citizens of the United States, and residents of the city of.

Fresno, county of Fresno, and State of California, have invented a new and useful Improvement in Auxiliary, Springs for Use on Automobiles, of which the following is a connecting a semi-elliptical spring and a cross bar spring together,

so that when-any strain is lmpartedto the springs to cause .in practically the springs to vibrate, the vibration will be taken up by the connecting means, which will be compressed by theaction of the springs and the shock transmitted to the springs absorbed by the connecting means. The connecting means consists of two convolute rings, a terminal of a ring connected to one spring, and the other terminal of the spring connected to another spring, so that when any shock or vibration is imparted to the car body, the shock and vibrations will be taken up by the rings and the rebound of the car body materially minimized. The rings, being of convolute form, are caused to wind closer together, so that the diameter of the rings is decreased when any shock or vibration is transmitted to the springs, thereby causing the springs to be maintained their normal position, which is not ossible with the ordinary shackle connection of the springs. The invention relates to still other novel features of construction and combinations of parts which will be hereinafter more fully described and pointed out in the claims.

In the accompanying drawings: Fi re 1 is a view in side elevation showing the invention applied to a set of springs; Fig. 2 is a top plan view; Fig. 3 is a view in side elevation showing the invention applied to an:

other form of spr ng; and Fig. 4 is an end view. v

A re resents two springs, made in the form 0 convolute rings, the ends or termi nals of each convolute ring passing the other.

Formed at each endof a ring are annular bearings 2, 2.

- These rings are connected to semi-elliptical springs B and C. An end of each ring A. is connected to the lower semi-elliptical spring C by means 'of shackle bolts 3, and nuts 4, and the other terminals of the two ringsA are connected to the semielliptical or laminated spring B by means Y of shackle bolts 5 and nuts 6.

In the modifications shown in Figs. 3 and 4, the spring C is connected to a spring D. The spring B in this instance is omitted, the shackle bolt 5 having a swivel hanger 7 connected thereto, which hanger is connected to the spring D. From the foregoing it will be seen that by, the lapping of the ends of the convolute rings, any vibrations or shocks received by the springs would cause the spring rings to be wrapped tighter together so that the diameter of the rings will be decreased, and.

there will not be a distension or elongation of the rings.

The annular bearings 2 formed at the ends of each ring are located ina vertical plane, that is, the bearing-or eye 2 of one of the terminals is directly over the hearing or eye of the other terminals, so that the ends of Y the rings arebrought as closely together as is possible,

To claim;

1. The combination with two springs, of a spring ring having overlapping ends, one terminal of the ring connected to an end of one of the springs, and the other terminal of the ring connected to the end of another spring, so that when any vibration or shock is transmitted to the -springs, the' spring ring will be caused to be convoluted, thereby decreasing the diameter of the ring.

2. The combination with two-springs, oi' twospring rings having overlapping ends,

- an end of one of the springs having an on of each of the ringsconnected thereto, ahd

, the other spring having the other terminals of the rings connected thereto, so that the ends of the rings are in a verticalplane, said rings convoluted when a strain or shock is transmitted to. the springs whereby the diameter of the rings is decreased.

ROBERT P. CLARK.-

, WILLIAM-H. CLARK.

Witnesses: I v

Manon BUCK,

T, R. Tnomson.

Copies of this mm m a. meme mhe cents each, by addressing the Commissioner 61 mum. Washington, D. e." v 

